Mold.



L. A. BROWN.

MOLD.

APPLICATION FILED NOVI 3, 1911.V

/Nz/E/vrof? Law/.s f7. `BROWN Patented A101129, 1913.

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specification.

@MWD sra'rnfs PATE OFFICE.

LEWIS A. BROWN, 0F I-IORINE, MISSOURI, ASSIGNOR TO SPRINGFIELD CONCRETEPOST i COMPANY, OF SPRINGFIELD, MISSOURI, A CORPORATION OF MISSOURI.

MOLD.

city of Horine, county of Jefferson, and

State of Missouri, have invented a new and. useful Mold, of which thefollowing is a This invention relates to molds, and more particularly to`molds for molding concrete into objects such as posts, columns, and thelike.

The prime object of the invention is to provide a mold of strong anddurable construction, which may be readily assembled in preparation forthe manufacture of plastic articles 4and may be readily 'disassembledfor removing the article, after being dried,

from the mold.

Other objects and features will be apparent from the following detaileddescription, reference being made to the accompanying drawings, in whichI have illustrated a pre-` ferred embodiment of my invent-ion, and inwhich- Figure l is a plan view of the mold set up to form a number ofarticles some of the compartments being filled with plastic material,others being empty. Fig. 2 is a longitudinal sectional view,substantially on the line 2-2 of Fig. 1. Fig. 3 is a transversesectional view, substantially on the line 3-3 of Fig. l. Fig. l is aperspective view of a portion of two of t-he mold compartments shown inassembled relation.

The mold comprises two side walls l rigid with and binding together thetwo end support-s 2 and also rigid with and binding together a number ofintermediate cross members 3. This structure may be construct-ed inpermanent form of such material as brick, concrete, metal or the like;or it may be constructed in portable form, in which event it ispreferable to use in its construction wood or other light material, forobvious reasons.

To the upper face of each of the end supports 2 are rigidly secured anumber of bearings l into each of which screws a threaded shaft 5. Theinner end of each of said shafts 5, supports, by swivel connection, apresser plate 6; the outer ends of the shafts being provided withhand-wheels 7 whereby t-he shafts may be operated to move the desired.Removably resting on each end Speciicaton of Letters Patent.

Application filed ITovembei|` 3; 1911. Serial No. 658,355.

partment is Patented Apr. 29, 1913.

' support 2 is an end plate 8 to whose inner faces are secured layers 9,of some suitable elastic material, such as rubber. canvas, or otherfabricated material. possessing the essential quality of elasticity. Themold compartments 10 are arranged to rest upon the end supports 2 andupon the intermediate cross members 3 and when so arranged the endplates 8 are pressed against the ends of said compartments 1bymanipulation of the shafts 5. In this way the mold compartments are'held rigid in assembled adjustment or relation. The ends of the moldcompartments press into the layers 9 of elastic material which`constitute seals for thev ends ofthe mold compartments so as to confinewithin the mold compartments the plastic materialfrom the time it isintroduced therein in liquid or semi-liquid state, until it completelysolidies.

Each mold compartment 10 comprises a channel portion, which ma, be ofany desired dimensions or shape. ilach mold compreferably formed withflanges ll on the upper edges of the walls thereof; the arrangementbeing such that the flanges of one compartment will fit alternatelyunder and over the flanges of the adjacent compartments, as clearlyshown in Figs. 3 and l of the drawing. It is obvious that as manycompartments as desired may be provided and that in assembled relationthey constitute a multiple mold, wherein any number of articles may becast at one time. The mold compartments l0 are preferably made ofdurable metal, so that they may be used repeatedly without becomingworn.

In use the mold is assembled as shown in Fig. l of the drawing. Thecompartments are then filled with plastic material for forming thearticles desired, and it will be apparent that the surface in contactwith the metallic mold compartments will conform with the smooth surfacethereof and the eX- posed upper surface may be readily smoothed with acement trowel or other device. After the articles solidify, the threadedshafts 5 are operated to move the presser plates 6 away from, and permitremoval of, the end plates 8 so as to release the articles and permittheir removal from the molds.

A. mold of this character is durable and convenient to operate and thearticles cast therein are uniformly well-shaped and smooth. The moldcompartments may be Varied in shape and number and dimensions and I donot restrict myself to any specific number or form of mold compartmentsor to other identical details of construction or arrangement, for it isobvious that several alterations and changes may be made withloutdeparture from the spirit and scope of my invention.

What I claim and desire to secure by Letters-Patent is- `1. A moldcomprising a frame composed of two relatively wide end supports arrangedparallel with each other, a number of cross members between saidsupports in the same horizontal plane with said supports, and two sidewalls rigid with said supports and with said cross members and havingtheir ends inwardly from the outer edges of said supports, invcombination with an end plate mounted and arranged to slide edgewiseupon each of said supports, mold compartments of equal length with saidside walls mounted between said side walls and resting upon said endsupports and upon the said cross members and having their open endsinwardly from the outer edges of said supports and from said end plates,a layer of fabricated elastic material secured to the inner face of eachof said end plates, and threaded shafts carried by said end supports formoving said end plates to press said elastic material against the endsof said Copies of this patent may be obtained for ve cents each, byaddressing the Commissioner of supports and terminating inwardly fromthe outer edges of said end supports, bearings mounted upon said endsupports, threaded shafts revolubly mounted in said bearings, presserplates slidably mounted upon said end supports, swivel connectionsholding said threaded shafts and said presser plates* permanentlytogether, end plates between said presser plates and the ends of saidcompartments, a layer of fabricated elastic material attached to theinner surface of each of said end plates, and means for operating saidshafts and said presser plates to compress said fabricated materialagainstithe ends of said mold compartments, substantially as specified.

In witness whereof, I have signed this specification in the presence oftwo subscribing witnesses.

LEWIS A. BROWN.

Witnesses Louis YECKEL, Jr., J. D. RIPPEY.

Iatnts Washington, D. C.

